| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
19권 2호 |
| 발표분야 |
나노_포스터 |
| 제목 |
Enhanced performance FET-type 17β-estradiol biosensor based on ultrathin carboxylated polypyrrole nanotube |
| 초록 |
We report a highly sensitive field-effect transistor type biosensor toward 17β-estradiol based on ultrathin carboxylated polypyrrole nanotubes (CPPy NTs). Ultrathin CPPy NTs are fabricated by self-degraded method with methyl orange and iron chloride template, and their diameters are 40 nm. Moreover, the amine-functionalized 17β-estradiol binding aptamers are attached on the surface of CPPy NTs through covalent bonding. This resulting ultrathin CPPy NTs based FET type biosensor provide a rapid response (＜ 1s) with high sensitivity and selectivity toward 17β-estradiol among biomolecules with similar structures. The limit of detection is extremely low concentration (1 fM). Due to the covalent bonding, this liquid-gated FET type 17β-estradiol biosensor shows longer life time. |
| 저자 |
장정식, 나원주, 안지현
|
| 소속 |
서울대 |
| 키워드 |
polypyrrole; nanotube; biosensor
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| E-Mail |
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